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"Them" is a pronoun which is often translated as "los", and "these" is an adjective which is often translated as "estos". Learn more about the difference between "them" and "these" below.
them(
thehm
)A pronoun is a word that stands in for a noun (e.g., she).
a. los (masculine)
It's been a long time since I talked to my brothers. I want to see them!Llevo mucho tiempo sin hablar con mis hermanos. ¡Ya los quiero ver!
b. las (feminine)
My aunts just arrived at the bus station. We need to go pick them up.Mis tías acaban de llegar al terminal de autobuses. Hay que ir a recogerlas.
b. se (used with direct object pronoun)
Why are they asking for the payment? I already gave it to them!¿Por qué están pidiendo el pago? ¡Ya se lo di!
these(
thiz
)An adjective is a word that describes a noun (e.g., the big dog).
a. estos (masculine)
These toys aren't going to put themselves away.Estos juguetes no se van a guardar ellos solos.
b. estas (feminine)
I want these compositions finished by ten.Quiero que estas redacciones estén acabadas para las diez.
A pronoun is a word that stands in for a noun (e.g., she).
a. estos (masculine)
Which cars do you mean? - These over here.¿A qué coches se refiere? - A estos de aquí.